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A common mistake dieters make is believing that healthy, fat-free or sugar-free foods are low in calories, writes registered dietitian Bonnie Taub-Dix. She advises clients to watch out for cooking oils, protein portions, salad dressing and wine, and limit consumption or consider lower-calorie alternatives.

An off-patent drug used to treat canker sores and asthma may help curb the effects of obesity, including type 2 diabetes, according to a study published in the journal Nature Medicine. Mice eating a high-calorie diet who also received amlexanox lost weight and body fat and reversed type 2 diabetes caused by the diet. Scientists hope to begin human trials within the year.

Soda consumption declined 16% in the past decade, and sales fell in the second half of 2012, as consumers cut back in favor of water and other lower-calorie options. Companies are reacting, including Coca-Cola, which has released a two-minute commercial touting its low-calorie offerings and urging consumers to strike a healthy balance.

Americans are adding calories to their diet by increasing their consumption of high-calorie beverages, according to a University of North Carolina study. Holiday drinks such as eggnog at 343 calories per cup and hot buttered rum at 300 calories can especially boost caloric intake. This article suggests reaching for a lower-calorie glass of champagne or white wine.